Poison Dragon

Melchior stared in cold fear at the huge beast. It had a long neck and powerful claws. He shuddered at the huge bat wings and snakelike head. The beast raised his head and uttered a hoarse cry.

“Quick, back!” The servant of the Dark Lord jerked Melchior away from the chasm. “One drop of his venom and—untreated—you will die. It is poisonous!”

[...]

Then the creature breathed a venomous fog from its huge mouth. The vapor blew out like live steam and surrounded Minton, who dropped his bow, grabbed his throat, fell to the ground, and grew still.